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  • Where is the Deadweight Loss for a Price Floor?
    Deadweight Loss continues to rankle students wherever it goes. This article is part of an ongoing series that derives it in great detail for various scenarios. Here we discuss about the case of price floors.
  • When Textbooks Can Be Wrong!
    Using Oxford IB Diploma Programme: IB Economics Course Book (2020), by Jocelyn Blink and Ian Dorton, as your IB Economics coursebook? Here’s a serious error in the book that I would like to share about.
  • Price Determination in a Market with Asymmetric Information.
    Most students know how asymmetric information afflicts markets. But few discuss in-depth about price determination in such markets. This piece aims to do more justice to that intriguing topic.
  • Is Singapore’s GST a Regressive Tax?
    If the answer was that straightforward, I wouldn’t have bothered with dedicating an entire article to it.
  • Proof of Diminishing Returns in a Concaved PPC.
    Every student recognises the traditionally-drawn concaved PPC, but many do not fully grasp the significance of the choice in shape.
  • All About GDP and GNI Discrepancies
    Is it always true that the GDP must equal the GNI at the global level?
  • Wage-Price Spiral and Singapore (Part 2 – The Solutions?)
    Direct responses to the fear of the Wage-Price Spiral? Or merely part of side-effects of broader economic wisdom? We explore the solutions to the problem from the previous article here.
  • Wage-Price Spiral and Singapore (Part 1 – Is It That Scary?)
    Don’t underestimate the Wage-Price Spiral as a major consideration in considering how big a scourge Inflation can be. Singapore’s MAS had something to say about it.
  • MAS’ Monetary Policy & Interest Rate Parity
    It appears that interest rates in Singapore are generally lower than global rates According to MAS, this has to do with expectations of appreciating SGD. So why should that be the case?
  • How To Draw The Kinked Demand Curve.
    The Kinked Demand Curve may not be as talked about these days. But it is a fun piece of framework to know more about. Read more about it here!
  • Why Do Subsidies Give Deadweight Loss?
    A rather perplexing question for students that requires a very strong grasp of the demand-supply model to give a good answer.
  • Demystifying the PPP Exchange Rate.
    This traditional blind-spot for students bit me recently. So this piece was created to save us all, for that next time.
  • How To Draw the Marginal Cost Curve.
    Ever wondered why the MC curve looks like the Nike logo? There are some intriguing reasons behind it that every student should know!
  • [An Update To] Proving Comparative Advantage Made Easy
    More than 2 years ago, I had done an “exam-ready” write-up on the explanation behind the Theory of Comparative Advantage. It seems timely now to revisit and refresh it to greater effect.
  • An Alternative Perspective to Market Dominance
    If you believe that money is the means to ends, then you would understand my assertion that profit-maximisation is, but a manifestation of something deeper.
  • What makes the Impossible Trinity Possible?
    The Impossible Trinity isn’t an explicit requirement for “A” levels. However its implicit application is a must-have for explanations relating to the limitations of monetary policies.
  • Limitations to the Theory of Comparative Advantage
    Why is globalisation appearing to be under threat despite its supposed benefits as laid out in the Theory of Comparative Advantage?
  • John is Good at Evaluating. Be Like John.
    Yet another student asked me about how he should evaluate in an Economics essay. The ensuing discussion was reproduced here at length, so we can all learn from it.
  • AirAsia Smaller Than SIA?
    My student’s school taught him rather confidently that AirAsia is a small airline. I wasn’t sure about that, and for very good reasons.
  • Building Confidence but Killing Economies.
    In “Adults in the Room”, then Greek finance minister, Yanis Varoufakis, gave an eye-watering account to why immediate tax hikes were often recommended to countries facing debt crises. His account was remarkable for the shocking lack of complexity for such unintuitive recommendations.
  • Old Habits Die Hard for Daily Commute?
    The Minister of Transport spoke once again about the need to reduce peak hour commute. I was reminded that this was my very research focus in my Honours thesis. So I am obliged do my bit and comment accordingly.
  • Who Benefits from Economic Stimulus?
    How do you know an overly simple application of “Economic Theory” when you see one? Simple – you can easily poke holes in it and watch stuff gush out.
  • Is This Assertion About Productive Efficiency Correct?
    When is a firm productively efficient? This seemingly easy question is harder than it looks.
  • Calming Down Before Your Exams
    Studying hard is only half the equation to achieving the best score in the exam. Keeping calm and focused is what this article will focus on.
  • We Gave You Public Transport And You Should Be Grateful.
    Attempting to relay unpopular public transport policies by quoting Economics concepts may sound like a good idea. But not in this case to me, hence this quick commentary.
  • Technology and Wealth Redistribution – Labour Exploitation
    Often the most difficult questions in the exam are the ones that are hugely relevant, but doesn’t appear to be covered in detailed in school notes.
  • Demerit Goods – Which Curves To Shift?
    TLDR: It doesn’t matter. But your preferred methodology may reveal your age. Don’t believe me? Read on!
  • The Not-So Efficient Market Hypothesis
    Do share prices always reflect the asset’s intrinsic value accurately?
  • Oil, Rockets and Feathers (Part 4 – The Grand Scheme of Things)
    I wrap up this mini-series with a final look at the pricing basis behind retail petrol in Singapore. In the grand scheme of things, much can be said, but not necessarily done.
  • Oil, Rockets and Feathers (Part 3 – A Tale of 2 Margins)
    The oil industry can be analysed from the perspective of supply chains. Looking deeper, we can see that interactions between the various suppliers result in double marginalisation of oil prices. What is that and does it contribute to the Rockets and Feathers effect?
  • Oil, Rockets and Feathers (Part 2 – The Dummies’ Explanation)
    I continue from my previous article about the Rockets and Feathers hypothesis for retail petrol prices. You may be surprised to know that some simple Economics’ concepts are sufficient in explaining CCCS’ observations on the retail petrol market.
  • Oil, Rockets and Feathers (Part 1 – Background)
    There has long been suspicion amongst the general public in Singapore that retail petrol prices, like many other consumer goods’ prices, are “sticky” downwards, even when crude oil prices fall. Is this true?
  • Of Fed’s Interest Rate Cut and COVID-19.
    The COVID-19 virus poses a huge economic risk to the USA, and the Federal Reserve has responded with a whopping 0.5% cut to the interest rate. Will this adventurous expansionary measure help matters?
  • The Consumer Price Index for Dummies
    The rate of change of CPI is often used to measure inflation. But do you know how the CPI is derived?
  • 4 Bite-Sized Reasons Why Deflation Can Be Bad.
    Why do the standard Economics texts studiously urge student to avoid deflationary situations? I have compiled 4 very handy points to get students through their exams, so do read on.
  • Our Time Preference Explains Our Failure on Climate Change
    Why do we drag our feet on climate change? It turns out that climate change replicates a conducive environment, familiar to Economists, that triggers our inherent tendency to discount future costs.
  • Impure Public Goods – What They Mean for Us.
    We all know about private and public goods. But there is a spectrum of goods that fall between, and are seldom mentioned. What are they, and what do they mean for us?
  • Why the US-China Trade War Persists: A Prisoners’ Dilemma
    Why do USA and China persist in the trade war despite it being a lose-lose situation? Game theory, and in particular, the Prisoner’s Dilemma may hold crucial answers to that.
  • The Marshall-Lerner Condition
    The Marshall-Lerner condition is often either regurgitated with little understanding, or dropped entirely by students in their exams. This post shows you why this concept is so important and why students ignore it at their own risk.
  • Why Non-Rivalry in Public Goods does not Lead to Zero Price
    There is a distinction between the properties of product rivalry and excludability that all students must know and apply appropriately. Non-rivalry by itself does not lead to non-production in the market.
  • Why Global Current Account Imbalances are so Worrying
    A persistent current account deficit is often a sign of poor international competitiveness. But there is more to it than just that, and it doesn’t get prettier for the country.
  • Proving Comparative Advantage Made Easy
    Proving that comparative advantage drives trade is often a painful affair in exams. We show you how it can easily be done with little memory work required.
  • How Should The Cross Island Line Be Built?
    This is a rather real issue in Singapore, appearing in the 2018 “A” level Economics exam. We think we can do better than most “recommended answers” and we are sharing it with you.
  • 4 Hacks to the Foreign Exchange Market
    We know how confusing the foreign exchange topic can be for Economics students. So we put together a series of hacks that will ease your life tremendously!
  • Calculating the GINI Coefficient
    Find out about how the very commonly used GINI coefficient is derived – it is actually very simple!
  • Baumol’s Cost Disease: Rising Healthcare Costs in Singapore
    Healthcare prices in many developed countries such as Singapore, often experience higher inflation rates than other sectors. Baumol’s Cost Disease is a key explanation behind this phenomenon.
  • How Fiscal Automatic Stabilising Works
    All Economics students know of fiscal policy in demand-management. But they often underestimate its potency as an automatic stabiliser. Read on to find out how to avoid losing in the exam!
  • Growth Methods Utilised by Firms
    How do firms grow? We aim to show that this process isn’t as mysterious as many students imagine it to be.
  • The Obike Mess: A Market Failure Lesson
    oBike’s demise has caused significant inconvenience in Singapore. But it appears that Economics theory would have predicted this outcome and allowed us to avoid such fate.
  • Firms’ Shut-Down Condition In 3 Easy Lines.
    The Shut-Down Conditions of a firm simplified in this article – Economics students’ nightmare no more!
  • How CCS Gatecrashed Grab & Uber’s Party
    In a rare move, CCS has intervened in the merger between Grab and Uber in Southeast Asia. We analyse the turn of events and shade light on what we have observed so far.
  • Why Anti-Trust Laws are Difficult to Enforce
    Monopolies are often the scourge in Economics. But bringing anti-competitive perpetrators to justice can be very difficult and long-drawn. Why is that the case?
  • A Quick Guide to Inequality in Economics.
    Inequality is often recognised as a side-effect to the Free Market. Yet too little of it has been discussed for most of us to fully appreciate its associated problems.
  • Government Support for Businesses in Singapore
    Have you heard of Enterprise Singapore? Do you know that in addition to being business-friendly, the government has schemes specifically for business support?
  • The East Asian Miracle: A Quarter-Century on
    Nearly 25 years have passed since the well-known World Bank report on the East Asian Miracle was published. So how well has the report stood the test of time?
  • Getting “Even” Richer Through Economics
    You had just earned your first profit – now can you use your JC Economics theories to help you sustain and grow it further?
  • Evaluation In An Economics Essay – 4 Pro Tips
    Having difficulties tackling evaluations in your Economics essay? This article will guide you through 4 tips to writing your essay like a pro.
  • The Free Market isn’t as Free as you Think.
    The Free Market is a fairly new phenomenon, made possible by various institutional support. As society evolves further, perhaps so will the resource allocation system too.
  • All About the Law of Diminishing Marginal Returns
    Feeling that the Law of Diminishing Marginal Returns is difficult to understand and apply? Read here to find out how I dissect it for easier reading.
  • Price Elasticity and Export Strategies for Countries.
    Most of us are familiar with how Price Elasticity concepts can advise business decisions. However, the concept of Price Elasticity can also be utilised to explain why countries that diversify their exports tend to do better than if they hadn’t.
  • 5 Great Hacks To Writing Awesome Essays for “A” Levels Economics
    Finding it difficult to get a good grade for your Economics essay? Writing good essays is not an easy task at all. Fortunately there are 5 highly useful tips that I will share with you – so read on!
  • What is FDI?
    We shed light on FDI and what it means for the host country. We show also that FDI, like many items, can be a double-edged sword.
  • Why Do Firms Produce Where Marginal Benefit Equals Marginal Cost?
    Students may be aware that firms do not necessarily produce at the point where P=MC (Demand meets Supply). But they tend to struggle in explaining why, and this article is explains thus.
  • The Coase Theorem and Externalities
    Proposing the Coase Theorem as a solution to externalities in your Economics exam not only gives you a better chance for an “A” grade, but may also prove easier to discuss during exams.
  • When There Can Be Too Much Savings
    Is being thrifty always good? If you had guessed that the answer was “no”, you would have been correct. Savings imbalances can actually destabilise the Economy and cause misery.
  • The True Cost Of Government Interventions
    Government Interventions are not magic bullets with no costs. In our second part discussion about Government Interventions, we seek to understand why students should be wary about using it as the “cure for all ills”.
  • Uber is Losing Lots of Money – Why Aren’t They Shutting Down Yet?
    Uber is losing large sums of money. Traditional firm shut-down conditions taught in JC Economics dictate that Uber should be shutting down. So why aren’t they doing so yet?
  • Getting an Economics Degree at NUS
    Do you like Economics at “A” level so much that you are considering a degree in Economics? I was in that position before – and I am about to share with you my experience as an undergraduate at NUS studying Economics.
  • How To Draw The Marginal Revenue Curve
    In most cases, Economics diagrams are not shaped the way they are by chance. A good example is the Marginal Revenue curve. Read this article to find out more about its derivation.
  • How To Evaluate Government Interventions Easily During Exams
    The evaluation of Government Interventions need not be painful for students during exams. There are easy ways to discuss about them easily and this article discusses how they can be achieved in 2 simple concepts.
  • The Difference Between “Demand” and “Quantity Demanded”
    Probably the most common mistake made by students, there are very important differences between “Demand” and “Quantity Demanded”, and using them interchangeably can cost you precious marks during exams.
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